TK-8160/8162
32
Item
Condition
Test equipment
Terminal
Parts
Method
Specifications/
Remarks
Measurement
Adjustment
If normal power is not obtained, please follow the
step below
Open the shielding cover (upper), and screw 3 locations
around ANT pin.
1. Switch off the transceiver.
Impedance of Power module (IC502) can be measured
easily using DVM
Ω
mode.
Normal condition
Input : 20k
Ω
~50k
Ω
, Output : 1M
Ω
~2M
Ω
The above impedance values are rough estimations.
ADJUSTMENT
2. Check input power level at Drive FET (Q502) gate location.
Connect the wire to [RF] location.
Transmit and check for power to be within the range of
0.3W~0.6W.
If power found is less than 0.3W, check the circuit before
the Drive FET.
4. Low
1) CH : TX low
Power meter
ANT
PC key
5W
±
1.0W
power
CH : TX low’
CH : TX center
CH : TX high’
CH : TX high
2) Transmit
5. DQT
1) CH : TX low (Wide)
Modulation analyzer
Adjust the waveform as below
balance
CH : TC center
or Linear detector
(Wide/Wide 4k/Narrow)
(LPF : 3kHz)
CH : TX high (Wide)
Oscilloscope
2) Transmit
6. MAX
1) CH : TX low (Wide)
Modulation analyzer
ANT
PC key
±
4.0kHz (Wide)
±
50Hz
balance
CH : TC center
or Linear detector
MIC
±
3.2kHz (Wide 4k)
(Wide/Wide 4k/Narrow)
(LPF : 15kHz)
±
2.0kHz (Narrow)
CH : TX high (Wide)
Oscilloscope
According to the large +, –
2) AG : 1kHz/50mV
AG
3) Transmit
AF V.M
7. MIC
1) CH : TX center
Check
±
3kHz
±
0.2kHz
sensitivity
(Wide/Wide 4k/Narrow)
(Wide)
2) AG : 1kHz/5mV
±
2.4kHz
±
0.2kHz
3) Transmit
(Wide 4k)
±
1.5kHz
±
0.1kHz
(Narrow)
8. DQT
1) CH : TX center
Modulation analyzer
±
0.75kHz (Wide)
±
0.05kHz
deviation
(Wide/Wide 4k/Narrow)
or Linear detector
±
0.60kHz (Wide 4k)
2) Transmit
(LPF : 3kHz)
±
0.35kHz (Narrow)
Oscilloscope
9. QT
1) CH : TX center
±
0.75kHz (Wide)
±
0.05kHz
deviation
(Wide/Wide 4k/Narrow)
±
0.60kHz (Wide 4k)
2) Transmit
±
0.35kHz (Narrow)
10. DTMF/
1) CH : TX center
LPF : 15kHz
±
3.0kHz (Wide)
±
0.2kHz
MSK
(Wide/Wide 4k/Narrow)
±
2.4kHz (Wide 4k)
deviation
2) Transmit
±
1.5kHz (Narrow)
11. Single
1) CH : TX center
tone
(Wide/Wide 4k/Narrow)
deviation
2) Transmit